Jest is a delightful JavaScript testing framework with zero config. It handles assertions, mocking, and code coverage out of the box.## Setup```bashnpm install --save-dev jest```## Basic Test```javasc
TypeScript adds static typing to JavaScript, catching errors at compile time rather than runtime.## Why TypeScript?- Catch bugs before they hit production- Better IDE support (autocomplete, refactorin
Asynchronous programming is fundamental to JavaScript. Understanding how to handle async operations separates junior developers from senior ones. This guide explains the evolution from callbacks to Pr